1 Samuel 26:11-15

The Lord forbid that I would reach out with my hand against the Lord’s anointed! But now please take the spear that is at his head and the jug of water, and let’s go.”

So David took the spear and the jug of water that were at Saul’s head, and they left; and no one saw or knew about it, nor did anyone awaken, for they were all asleep, because a deep sleep from the Lord had fallen on them.

Then David crossed over to the other side and stood on top of the mountain at a distance with a large area between them.

And David called to the people and to Abner the son of Ner, saying, “Will you not answer, Abner?” Then Abner replied, “Who are you who calls to the king?”

So David said to Abner, “Are you not a man? And who is like you in Israel? Why then have you not guarded your lord the king? For one of the people came to kill the king your lord!